This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: NAME: _______________________________ I.D.: _________________________________ TEST PROBABILITY AND STATISTICS APRIL 13, 2007 1-2 (Two questions – Twenty points) There are two variables, shoe size (X) and neck size (Y). What is the correlation coefficient? The standard deviations of X and Y are 6 and 5. X Y 3 18 7 14 15 26 15 20 3. Let’s continue with the above example. You are testing to see if the result is significant. Let it be a two-tailed test where α = .05. What is the critical value? What do you conclude concerning the null hypothesis, and what does this mean with regards to what you can conclude about the relation between shoe size and neck size? (You must discuss these two variables.) 4-5. (Two questions – Twenty points) Let’s have some fun calculating lambda. Please do so for the below data. 30 40 10 70 10 5 5 10 20 6. Fill in the below chart with numbers that make Spearman’s rho and Gamma equal....
View Full Document
- Spring '08
- Correlation Coefficient, Correlation and dependence, Pearson product-moment correlation coefficient, Covariance and correlation, Spearman's rank correlation coefficient